We've known for a while that it was coming -- thanks to Jimmy Eat World's Clarity throwback tour, which was announced several weeks back -- but now it's official: the Lansdowne Street House of Blues (which of course will bare no resemblance to the old Original House of Blues in Harvard Square where you saw R.L. Burnside and David Johanssen and such) will open in February, with a lineup that sounds not unlike what the old Avalon would've played host to around this time of year. Tickets go on sale Saturday for the first batch of shows, which includes the now-traditional Dropkick Murphys St. Paddy's Day blowout. Tickets will be available at LiveNation.com for the following . . .